Strabon

Windows · Linux · Self-hosted

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Freedom report

One barScore 5.5

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

Strabon is ranked #23 of 26 in RDF databases on Freedom251. It runs on Linux, Self-hosted, Windows.

Compared on RDF databases

Free plan: Yes
Deployment options: self-hosted
SPARQL support: sparql 1.1
Reasoning support: Yes

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The record

Product: Strabon is a spatiotemporal RDF store for storing linked geospatial data that changes over time and querying it with extensions of SPARQL.
Spatial data: It supports spatial datatypes and serializes geometric objects in OGC WKT and GML formats.
Spatial queries: It offers spatial selections and joins, spatial functions, and support for multiple Coordinate Reference Systems.
Temporal data: It supports valid time for triples, temporal functions, and modeling temporal domains and concepts such as events and facts that change over time.
Query languages: Strabon supports stSPARQL for querying data represented in stRDF, and a subset of GeoSPARQL for static geospatial RDF data.
GeoSPARQL scope: The site says implementation of the other GeoSPARQL components is underway.
Technology: Strabon extends Sesame, now called RDF4J, and uses its components to manage thematic, spatial, and temporal data stored in a backend RDBMS.
License: Strabon is released under the Mozilla Public License.
Download: The download page directs users to the project's GitHub repository for the latest version.
Documentation: The download page links to an stRDF and stSPARQL tutorial and provides an stSPARQL reference describing spatial and temporal extension functions.
Support: The project lists separate mailing lists for users and developers; the developers channel also receives check-in messages.
Use case: The site describes Strabon being used to store and query timeseries data in a MELODIES use case.
Backend: Strabon extends RDF4J components to manage thematic, spatial, and temporal data stored in a backend relational database.
Deployment: The repository installation instructions describe setting up Strabon with PostgreSQL 12 and PostGIS 3.0, building it with Maven, and deploying an endpoint on Tomcat.

Where it ranks on Freedom251

Best RDF Databases in 2026#23 of 26

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Sources

strabon.di.uoa.gr· checked 7 Oct 2026
strabon.di.uoa.gr/download.html· checked 7 Oct 2026
github.com/AI-team-UoA/Strabon· checked 7 Oct 2026
strabon.di.uoa.gr/history.html· checked 7 Oct 2026